6.1

CVE-2023-45819: tiny tinymce Cross-site Scripting

CVSS: 6.1v3.1MediumModified
AliasesUBUNTU-CVE-2023-45819GHSA-hgqx-r2hp-jr38
Published 19-10-2023Last modified 12-09-2024
Open JSON

Vulnerability summary

CVE-2023-45819 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in tiny tinymce. EPSS estimates a 0.63% chance of exploitation in the next 30 days, higher than 49.4% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.63%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-10-2023
    PublishedVulnerability first disclosed.
  2. 12-09-2024
    Last modifiedVulnerability information updated.

Description

TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s Notification Manager API. The vulnerability exploits TinyMCE's unfiltered notification system, which is used in error handling. The conditions for this exploit requires carefully crafted malicious content to have been inserted into the editor and a notification to have been triggered. When a notification was opened, the HTML within the text argument was displayed unfiltered in the notification. The vulnerability allowed arbitrary JavaScript execution when an notification presented in the TinyMCE UI for the current user. This issue could also be exploited by any integration which uses a TinyMCE notification to display unfiltered HTML content. This vulnerability has been patched in TinyMCE 5.10.8 and TinyMCE 6.7.1 by ensuring that the HTML displayed in the notification is sanitized, preventing the exploit. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.63%

Chance of exploitation in the next 30 days

Percentile

49%

Versus all other CVEs

30-day change

+0.03 pp

From 0.60% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.63%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tinymce2 products
  • tinymce≥ 6.0.0, < 6.7.1 | < 5.10.8
  • tinymce< 5.10.8 | ≥ 6.0.0, < 6.7.1
Npm1 product
  • tinymce≥ 6.0.0, < 6.7.1 | < 5.10.8
NuGet1 product
  • TinyMCE≥ 6.0.0, < 6.7.1 | < 5.10.8
Tiny1 product
  • tinymce< 5.10.8 | ≥ 6.0.0, < 6.7.1
Ubuntu1 product
  • tinymceAll versions (No fix recorded)

5 vendors · 6 products

References

7 links